Na Storage in Sb2S3@C Composite: A Synergistic Capacity Contribution Mechanism with Wider Temperature Adaptability

• DOI: 10.1021/acsami.2c22068
• Publication Date: 2023-03-24T21:37:20Z
• Authors: Sundas Iqbal; Yue Ma; Bingqing Wei; Mustehsin Ali; Tingkai Zhao
• Keywords: Overpotential; Plating (geology); Power density

The practical applications of metallic anodes are limited due to dendritic growth, propagation in an infinite volume during the plating process, and parasitic interfacial reactions between sodium (Na) electrolyte. Herein, we developed Sb2S3 microrods as a template regulate nucleation Na. Additionally, deposited metal could be spatially regulated via "nanoconfinement effect", that is, within conformal hard carbon (C) layer nanothickness. Moreover, carefully studied seed effect situ-formed Na-Sb Na-S alloys C sheath Na process. symmetrical cells Sb2S3@C composite anode achieved dendrite-free cycling at 1 mA cm-2 for 1100 h high capacity loading considerably mitigated overpotential 20 mV. Pairing NaVPO4F (NVPF) cathode (4.6 mg cm-2) with situ presodiation (2*Na excess) prototype delivered energy density power 173.75 W kg-1 868.57 kg-1, respectively. Therefore, this study provides tremendous possibilities employing proposed hybrid storage mechanism low-cost high-energy-density batteries.